We want to transmit a message which is wide-sense stationary (WSS) to a destination via a channel with 50-dB attenuation and additive white noise with the power spectral density Sn(f=10-12 W/Hz. We also want to achieve an SNR at the modulator output of at least 50-dB. What is the required transmitter power and channel bandwidth if we employ the DSB-SC AM.? Characteristics of message signal m(t) are as follows. Туре: WSS Auto-correlation function: ACF=R(T) = 16 sinc (10000r) all the realizations of the message process satisfy the condition max m(t) = 6

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Fiber Optics

Fiber optics is a technology used to transmit the facts such as light or pulses with fiber or plastic over long distances. Visual fibers are about the width of a human hair strand and, when tied directly to a fiber-optic cable, can transmit multiple long-distance records and faster in different ways.